Twenty Minutes That Reshape Your Workout Routine
High-intensity interval training, usually called HIIT, is one of the most time-efficient ways to exercise. Instead of moving at a steady pace for an hour, you alternate short bursts of hard effort with brief recovery periods. A session can last twenty minutes or less, yet it can provide many of the same fitness benefits as longer workouts. People with busy schedules use HIIT, and athletes use it to improve conditioning. It requires little or no equipment and can be performed in a living room, park, or gym.